IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0454215
(2003-06-04)
|
등록번호 |
US-7393607
(2008-07-01)
|
우선권정보 |
JP-2002-169934(2002-06-11) |
발명자
/ 주소 |
- Mohri,Masahiro
- Fujii,Yosuke
- Yoshida,Hiromichi
- Wachi,Daisuke
- Goto,Shuhei
|
출원인 / 주소 |
- Honda Giken Kogyo Kabushiki Kaisha
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
5 |
초록
▼
A fuel cell includes a membrane electrode assembly, and a first and second separators for sandwiching the membrane electrode assembly. The first separator has an oxygen-containing gas flow passage for allowing an oxygen-containing gas in a serpentine pattern to flow horizontally back and forth, and
A fuel cell includes a membrane electrode assembly, and a first and second separators for sandwiching the membrane electrode assembly. The first separator has an oxygen-containing gas flow passage for allowing an oxygen-containing gas in a serpentine pattern to flow horizontally back and forth, and flow downwardly. Partition areas are provided along the oxygen-containing gas flow passage in the serpentine pattern. The partition areas are formed by partially cutting out a gas diffusion layer. Insulating seals for preventing leakage of the oxygen-containing gas are provided in the partition areas.
대표청구항
▼
What is claimed is: 1. A fuel cell comprising an electrolyte electrode assembly, and a pair of separators for sandwiching said electrolyte electrode assembly, said electrolyte electrode assembly including an anode, a cathode, and an electrolyte interposed between said anode and said cathode, wherei
What is claimed is: 1. A fuel cell comprising an electrolyte electrode assembly, and a pair of separators for sandwiching said electrolyte electrode assembly, said electrolyte electrode assembly including an anode, a cathode, and an electrolyte interposed between said anode and said cathode, wherein at least one serpentine reactant gas flow passage is formed on at least one surface of said separators facing said electrolyte electrode assembly for supplying a reactant gas in a serpentine pattern to said electrolyte electrode assembly, said reactant gas including at least one of an oxygen-containing gas and a fuel gas; a plurality of partition areas are provided along said reactant gas flow passage, each partition area dividing said reactant gas flow passage into an upstream side and a downstream side, said reactant gas flowing along one side of the partition area in one direction in said upstream side of said reactant gas flow passage and along the other side of the partition area in an opposite direction in said downstream side of said reactant gas flow passage; a plurality of members are provided in said partition areas, each member preventing leakage of said reactant gas between said upstream side and downstream side of said at least one serpentine reactant gas flow passage across said partition area; and areas in direct contact with the partition area are free of gas diffusion layer of at least one of said cathode and said anode. 2. A fuel cell according to claim 1, wherein said reactant gas flow passage extends in the serpentine pattern for allowing said reactant gas to flow horizontally back and forth, and flow downwardly. 3. A fuel cell according to claim 1, wherein an opening for inserting a positioning guide is formed on one of said partition areas to pass through said member provided in said partition area. 4. A fuel cell stack formed by stacking a plurality of fuel cells in a stacking direction, said fuel cells each comprising an electrolyte electrode assembly, and a pair of separators for sandwiching said electrolyte electrode assembly, said electrolyte electrode assembly including an anode, a cathode, and an electrolyte interposed between said anode and said cathode, wherein at least one serpentine reactant gas flow passage is formed on at least one surface of said separators facing said electrolyte electrode assembly for supplying a reactant gas in a serpentine pattern to said electrolyte electrode assembly, said reactant gas including at least one of an oxygen-containing gas and a fuel gas; a plurality of partition areas are provided along said reactant gas flow passage, each partition area dividing said reactant gas flow passage into an upstream side and a downstream side, said reactant gas flowing along one side of the partition area in one direction in said upstream side of said reactant gas flow passage and along the other side of the partition area in an opposite direction in said downstream side of said reactant gas flow passage; a plurality of members are provided in said partition areas, each member preventing leakage of said reactant gas between said upstream side and downstream side of said at least one serpentine reactant gas flow passage across said partition area; areas in direct contact with the partition area are free of gas diffusion layer of at least one of said cathode and said anode; an opening is formed in said at least one partition area; and a positioning guide is inserted in said opening for positioning said fuel cells. 5. A fuel cell stack according to claim 4, wherein an end plate having said positioning guide is provided outside an outermost fuel cell of said fuel cells stacked together in said stacking direction. 6. A fuel cell comprising: an electrolyte electrode assembly including an anode, a cathode, and an electrolyte interposed between said anode and said cathode, a pair of separators for sandwiching said electrolyte electrode assembly, a serpentine reactant gas flow passage disposed between said electrolyte electrode assembly and one of said separators for supplying a reactant gas to said electrolyte electrode assembly in a serpentine pattern, wherein said serpentine reactant gas flow passage includes a plurality of turns, each turn dividing the said serpentine reactant gas flow passage into a first reactant gas flow passage and a second reactant gas flow passage; areas in direct contact with the partition area are free of gas diffusion layer of at least one of said cathode and said anode; and a plurality of members provided adjacent to said plurality of turns, each member being provided between the first gas flow passage and the second gas flow passage so that the reactant gas flows along one side of the member in one direction in the first gas flow passage of said reactant gas flow passage and along the other side of the member in an opposite direction in the second gas flow passage of said reactant gas flow passage, each member sealing the first gas flow passage and the second gas flow passages and preventing said reactant gas from flowing from the first gas flow passage to the second gas flow passage.
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